A136813 - OEIS

A136813 as a simple table

n	a(n)
1	0
2	1
3	10
4	11
5	100
6	101
7	110
8	111
9	1000
10	1001
11	1010
12	1011
13	1100
14	1101
15	1110
16	10000
17	10001
18	10010
19	10011
20	10100
21	10101
22	10110
23	10111
24	11000
25	11001
26	11010
27	11100
28	11101
29	100000
30	100001
31	100010
32	100011
33	100100
34	100101
35	100110
36	100111
37	101000
38	101001
39	101010
40	101011
41	101100
42	101110
43	110000
44	110001
45	110010
46	110100
47	110101
48	111000
49	111001
50	111010

[0,1,10,11,100,101,110,111,1000,1001,1010,1011, 1100,1101,1110,10000,10001,10010,10011,10100, 10101,10110,10111,11000,11001,11010,11100,11101, 100000,100001,100010,100011,100100,100101,100110, 100111,101000,101001,101010,101011,101100,101110, 110000,110001,110010,110100,110101,111000,111001, 111010]